Commit ff25691d00d634068c6389f8f1607d7cc95ac5be makes qtdeclarative autotests crash

For example tests/auto/quick/qquickborderimage.

The problem seems to be that QHttpNetworkConnection::setTransparentProxy() calls setProxy() on a channel that hasn't been initialized. This causes the subsequent call to QHttpNetworkConnection::transparentProxy() to crash since d->channels[0].socket is null.

Backtrace:

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000008
[Switching to process 40713 thread 0x8607]
QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> >::data (this=0x8) at qscopedpointer.h:132
132 return d;
(gdb) bt
#0 QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> >::data (this=0x8) at qscopedpointer.h:132
#1 0x0000000102e72d45 in qGetPtrHelper (p=@0x8) at qglobal.h:1357
#2 0x0000000102e733dc in QAbstractSocket::d_func (this=0x0) at qabstractsocket.h:220
#3 0x0000000102e72313 in QAbstractSocket::proxy (this=0x0) at socket/qabstractsocket.cpp:2895
#4 0x0000000102da434f in QHttpNetworkConnection::transparentProxy (this=0x104529fc0) at access/qhttpnetworkconnection.cpp:1200
#5 0x0000000102daa0c3 in QHttpNetworkConnectionChannel::ensureConnection (this=0x10484a0d8) at access/qhttpnetworkconnectionchannel.cpp:646
#6 0x0000000102da3a46 in QHttpNetworkConnectionPrivate::startNetworkLayerStateLookup (this=0x10452b120) at access/qhttpnetworkconnection.cpp:1087
#7 0x0000000102da30d0 in QHttpNetworkConnectionPrivate::_q_hostLookupFinished (this=0x10452b120,
info=<value temporarily unavailable, due to optimizations>) at access/qhttpnetworkconnection.cpp:1036
#8 0x0000000102da46e3 in QHttpNetworkConnection::qt_static_metacall (_o=0x104529fc0, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0x104529c30)
at moc_qhttpnetworkconnection_p.cpp:54
#9 0x0000000103d72f9e in QMetaCallEvent::placeMetaCall (this=0x10452c720, object=0x104529fc0) at qobject.cpp:446
#10 0x0000000103d74b71 in QObject::event (this=0x104529fc0, e=0x10452c720) at qobject.cpp:1024
#11 0x0000000101e1e3f5 in QApplicationPrivate::notify_helper (this=0x1058013c0, receiver=0x104529fc0, e=0x10452c720) at qapplication.cpp:3713
#12 0x0000000101e20878 in QApplication::notify (this=0x7fff5fbff9b0, receiver=0x104529fc0, e=0x10452c720) at qapplication.cpp:3172
#13 0x0000000103d318ef in QCoreApplication::notifyInternal (this=0x7fff5fbff9b0, receiver=0x104529fc0, event=0x10452c720) at qcoreapplication.cpp:694
#14 0x0000000103d36244 in QCoreApplication::sendEvent (receiver=0x104529fc0, event=0x10452c720) at qcoreapplication.h:206
#15 0x0000000103d32da0 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x105c3e820) at qcoreapplication.cpp:1293
#16 0x0000000103db8a63 in QEventDispatcherUNIX::processEvents (this=0x1059c6750, flags=

{i = 36}) at qeventdispatcher_unix.cpp:586
#17 0x0000000103d2cf2c in QEventLoop::processEvents (this=0x10cb80dc8, flags={i = 36}

) at qeventloop.cpp:135
#18 0x0000000103d2d148 in QEventLoop::exec (this=0x10cb80dc8, flags=

{i = 0}

) at qeventloop.cpp:211
#19 0x0000000103af5630 in QThread::exec (this=0x105c3e560) at qthread.cpp:469
#20 0x0000000103af5865 in QThread::run (this=0x105c3e560) at qthread.cpp:536
#21 0x0000000103afd29c in QThreadPrivate::start (arg=0x105c3e560) at qthread_unix.cpp:307
#22 0x00007fff8fd228bf in _pthread_start ()
#23 0x00007fff8fd25b75 in thread_start ()

It would be good if the qtbase network tests exercised the proxy stuff so that this error would be caught by the qtbase CI.